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. 2021 Mar 31;13(4):250. doi: 10.3390/toxins13040250

Figure 3.

Figure 3

Multiple reaction monitoring (MRM) chromatograms of TTX and 4,9-anhydroTTX in certified standard (A,B), and in trumpet shell (Cl-3, viscera) sample (C,D) and, the TTX analogue with m/z 318 in trumpet shell (E).